It depends on context. In my sitch that would have been an extremely hurtful and insulting remark to make. Very not-funny.
My H turned into a horrible kisser in the last few months that I remember getting any kisses from him. He would literally envelop my face with his gaping mouth and get spit all over me. I could barely stand it. But I was very sensitive to being respectful and constructive and I tried to stay in the "I love it when you..." rather than the "I hate it when you..." territory. It backfired and I got a whole lot of nothing rather than any interest in trying to explore what I might like, and then not too long after, the bomb. There is no way on earth I'd have been so insensitive as to talk about his lizard tongue. That is almost calculatedly rude.
I would, however, chalk it up to a WAS being a WAS and try not to take it personally. I would not stand for it in the moment and say hey be a little kind why don't you, but not make a huge deal about it. It could just be a bit of justifying things aren't working kind of stuff...I believe when you both WANT things to work you will both want to try a little harder and will get there.
I think when she said she likes close mouthed kisses, though, that was a gift wrapped present of a statement of what she likes. Honor that. Learn how to do very sexy close mouthed kisses until she wants something more intense. You don't get to decide for her what she should like or want.
Adinva 51, S20, S18 M24 total 6/15/11-12/1/12 From IDLY to H moving out 9/15/15-3/7/17 From negotiating SA to final D at age 50 5/8/17-now: New relationship with an old friend __ Happiness is a warm puppy.